Steam-actuated valve



(No Model.)

C. H. BURTON.

. I STEAM AGT'UATED VALVE. No. 317,500. r Patented May 12, 1885 F74. l A".s.; vvvv v mi2/@$615, Lw enor H Bluvll u, Parana Pnwmmmm wmmm. u c

UNITED STATES PATENT OFFICE.

CHARLES H. BURTON, OF CLEVELAND, OHIO.

STEAM-ACTYUATED VALVE.

SPECIFICATION forming part of Letters Patent No. 317,500, dated May12,1885.

Application filed June 4, 1884.

To @ZZ whom it may concern.-

Be it known that I, CHARLES H. BURTON, of Cleveland, in the county ofCuyahoga and State of Ohio, have invented certain new and useful.Improvements in Steam-Actuated Valves, of which the following is aspecification.

This invention relates to that class of steamvalves known assteam-actuated valves; 7 and it consists in the peculiar constructionand combination of parts, as hereinafter described and claimed.

In the accompanying drawings, Figure l is a vertical longitudinalsection of a device embodyin g myinvention. Fig. 2 is aview, part inplan and part in section, of the same in line 2 2, Fig. l. Fig. 3 is atransverse vertical section of the same in line 3 3 of Fig. l. Fig. 4 isa view, partly in perspective and partly in section, of the cylinder andvalve-cases, showing the arrangement of steam-ducts and a blind valve 7for changing direction of steam in said ducts. Fig. 5 is a view inelevation of the blind-valve, looking in the direction of the arrow inFig. 3, having outer wall removed to show interior.

A is a steam-cylinder. B is a steam-chest; C, the piston ofsteam-cylinder A. D is a cylindrical valve operating within thesteamchest B. E E are steam supply or feed ports leading from the endsof the cylinder A inwardly toward the middle portion of the steamchestB. F is the exhaust. g is a port leading from the steam-chest B to thevalve K, and g is another port leading from the opposite end ofsteamchest B to the valve K. This valve K constitutes my improvement inthis present application. The parts of the device herein mentioned andpreceding this valve are contained in my Patent No. 224,072, of February3, 1880. Said valve K consists of a flat plate located in a chamber, 7c,attached to one side of steam-chest B, and slides upon the wall of saidchamber next against the steamchest. Its impinging face has an S-shapedgroove cut into it, the upper arm of said groove arranged to registerwith port g, and the lower arm arranged to register with the other port,g', and the central arm of said groove registering with a port, g2,leading from the steam-chest. The valve D in this construction is thesame as that in my patent of (No model.)

the heads D D2 is made a small hole or vent, d,

through which steam may freely escape at all times, for the purpose ofbalancing the valve, and providing a steam-cushion at each end thereof.The two middle disks, D3 D4, are located and constructed to regulate andcontrol the passage of steam from the steam-chest B to the cylinder Athrough the ports E, and also to regulate the exhaust of steam from thecylinder A.

K2 is a longitudinal stem or shaft, attached to valve K for operatingthe same. Motion is imparted to the valve K through the agency of themovements of boss K5, which is attached to the rod of the piston C. Thisboss K5, impinging alternately against the stops K3 K4, imparts anintermitting longitudinally-reciprocating motion to the valve K. Theboss K5 may be substituted by a lever pivoted between piston-rod andshaft K2, and operated by stops on the piston-rod like those on shaftK2. This would require that the S-shaped groove in the face of valve Kbe reversed, as seen at s, Fig. 4, so that the same reciprocations ofthe valve K serve for changing direction of steam as by the other means.

The operation of my device is as follows: In Fig. l the parts are shonnin the position that they assume when the piston C is at its extremeleft-hand throw. 1n this position steam will be fed through supply Binto valve` chamber k, thence up through and over through the ducts la7a2, into the steam-chest between the disks D D3 of the valve D, throughthe left-hand port E to the left face of the piston C, while the steamfrom the righthand face of said piston will be discharged through theexhaust by way of the right-hand port E and the space in the steam-chestbetween the disks D3 D4, and finally through the exhaust F. In thisposition of parts the portg and the upper arm of the groove in the valveK have registered, so that steam has escaped through said port from theright-hand side of the valve D, thus relieving the pressure suddenlyfrom that end, the pressure of steam upon the opposite end havingalready IOO with its valve K, to the right sufficiently to bring theport g and the lower arm oi' the groove in the face of the valve K intoregister, at which time steam will escape andwbe discharged from theleft end of the valve D, which will cause it to move to the left,causing the disk D3 to cnt ott' steam through the Ieft-hand port E, and,after it has passed over it, to permit the steam from the left ot1 thepiston C to discharge through this left-hand port E, and the spacebetween the disks D3 D4, ont through the exhaust F. Meanwhile, steamwill be admitted through the suppl y B between the disks DeL D2, throughthe right hand port E to the right-hand face of the piston G, which willdrive it to the posIton shown. in Fig. l. The holes d in the heads D D2of the valve D should not be so large as to permit of too free passageof steam, so that when the steam is exhausted from either end thepressure elsewhere upon this valve will cause it to move in thedirection of the exhaust, either to the right or left, as the case maybe. In practice these holes maybe about one-sixiteenth inch in diameterfor a valve two inches in diameter. It will be noticed that this valve Kexposes -none of its ports to the chamber k, Where the steam firstenters, and is therefore in that sense a blind valve. steam in saidchamber serves to bear upon and hold the valve upon its face.

AHaving described my invention, what I claim isl. The valve K, inclosedin a steam-chamber and having grooves or channels in its face arrangedto register with ports r/ g alternately, substantially -in the mannerand for the purpose specilied.

2. The combination, with the main valve D, provided with the groovedpistons D D2 and intermediate pistons or disks, D2D4, ofthe auxiliaryvalve K, provided with S-shaped groove communicating with. the ports g gand port g2, and the cylinder A, with its ports E E and exhaust F.

GHARLES H. BURTON. Witnesses:

GEO. W. TIBBIr'rs,

M. Gr. NORTON.

The pressure of

